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exhaust manifold problems   Message List  
Reply | Forward Message #26224 of 28005 |
RE: [Econosrus] exhaust manifold problems

We are thinking the same thoughts, re JM’s 300…no way would I be ripping into the manifolds every few weeks…

 

However the 300 is a weird animal…the two stock manifolds are bolted together very solidly, and they share common bolts.  The intake/exhaust gasket is a separable unit, so perhaps with headers, maybe just the intake gets a gasket, and yse the copper for the headers?  Figure out how to deal with the “step” between the two flange heights, with a common bolt needed for the two flanges?  It’s all possible…

 

John/Fresno

 

From: Econosrus@yahoogroups.com [mailto:Econosrus@yahoogroups.com] On Behalf Of Len
Sent: Friday, July 10, 2009 6:41 AM
To: Econosrus@yahoogroups.com
Subject: [Econosrus] exhaust manifold problems

 




Saw several references to leaky exhaust manifolds in the last digest. Haven't you guys ever heard of Permatex Copper?

1. Remove manifold and clean surfaces.
2. Coat one surface with Permatex Copper.
3. Install manifold and torque bolts.
4. Allow drying time.
5. Forget about it.

I used this stuff on my 429 ten years ago and it's still holding strong.

 
Fri Jul 10, 2009 4:19 pm

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jdwedd
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Forward 		Message #26224 of 28005 |
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Saw several references to leaky exhaust manifolds in the last digest. Haven't you guys ever heard of Permatex Copper? 1. Remove manifold and clean surfaces. 2.... 		Len
donutbandito
Offline Send Email 		Jul 10, 2009
1:40 pm

We are thinking the same thoughts, re JM's 300.no way would I be ripping into the manifolds every few weeks. However the 300 is a weird animal.the two stock...
John Weddington
jdwedd
Offline Send Email 		Jul 10, 2009
4:20 pm

I ran the old Clifford 6-into-2 headers on my 240 for years, and never had a problem with the gaskets leaking. At least two companies - Rocket and Mr. Gasket -...
polecat1010
Offline Send Email 		Jul 11, 2009
2:00 am

Len, I've heard of it but never tried it. Are you saying to eliminate the gasket completely? A friend tried that once on a 352, and installed the manifolds...
polecat1010
Offline Send Email 		Jul 11, 2009
1:46 am

I went back to no gaskets on my GM truck with 454. I had a problem with it blowing out the rear passenger side. It's a bit noisier when cold, but once it...
Eric Claussen
etclaussen1
Offline Send Email 		Jul 11, 2009
3:50 pm
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